Although there are a few plugins that help you importing data like posts or pages into WordPress I haven’t found one that allows you to map your data to WordPress’ data structures dynamically – the import format seems to be set in stone already. The intention of this plugin is to loosen this constraint, allowing the user to configure a mapping on the fly when importing the data.
Download the plugin, install it and go to the options page of the plugin. Upload a CSV file, follow the steps of the wizard, map your data and finish the import. It’s as easy as that right now.
This plugin could be extended in many ways of course. The mapping could be much more sophisticated, right now only pretty simple mappings are possible. In case you’re interested in developing the plugin just contact me.